This game is played in several hands. In each hand the players try to be the first to get rid of all of their cards. Their scores are based on how early in the hand they get rid of all their cards. There are two ways to play: you can play where all hands are played the same, or you can play the game with changing partners.

This is a climbing game, similar to The Great Dalmuti, Tichu, and others. The difference here is that the ranks are different kinds of colorfully illustrated animals. Each is scared away only by certain other animals. Players set out one to whatever cards of a particular variety, and someone can play onto that pile only if they have more of that animal or an equal number of some animal that can scare it away. Players get points by playing all their cards, collecting lions, and collecting a hedgehog.

Quick Rules Summary & Outrank Table. 2-sided. Fits in box.
It requires some familiarity with the rules already (e.g., what Jr. and Sr. mean), but it should serve you well as a reminder for those times the game comes to the table after a long absence; and it serves as a reminder to other players about the rules that you have explained to them when you introduced the game.
The back side conveniently reminds players of the three things that I have found the need to repeatedly explain during play - what they can do on their turn, what the rankings are, and what the card distribution is in the deck.

Corrected version of the other Hungarian rule set. I changed some sentences here and there to make it more confirm to the original rules and make it grammatically more correct.
I also expanded the document with the 3-player variant created by the game designers, and the other 3-player variant found here on BGG and on the website of Doris & Frank.
Formatted in a way to make it possible to print it on a single sheet of A4 paper if printed double-sided.

Excel file containing a score sheet for Frank's Zoo.
As player finish, ranking, pairing, team, individual, and total scores can be a "bear" to keep track of, try this score sheet to simplify scoring.
Version 1

Concise reference sheet for looking up easy-to-forget rules quickly. Useful if you haven't played the game for some time and need a refresher. Provides a summarised and structured outline to help in teaching a game.